baber/WOPTO huggingface dataset:
Patent GB-709374-A (GB)
Title: Electric lamp switches
Inventor: ABRAMS ARNOLD AARON
IPC: F21V23/04
Filed: 1951-11-22
Abstract: 709,374. Retractive switches. WILMOTBREEDEN, Ltd. Nov. 5, 1952 [Nov. 22, 1951], No. 27396/51. Class 38(5) A switch for use with a lamp of the kind having two lenses h provided with sliding shutters f (particularly a lamp as described in Specification 709,303), [Group XI], comprises a movable contact b loaded by a spring c, both being mounted in a metal box a. When the lenses are uncovered, Fig. 1, the contact b engages a fixed contact g in the form of a roller mounted on a terminal port. On covering one of the lenses, a nose e of one shutter f engages the ramp d thus rocking the contact b slightly, Fig. 2, the switch, however, still remaining closed, the covering of both lenses causing the switch to open, Fig. 3, due to the lifting of the contact by the shutters f. In another embodiment, Figs. 4-6 (not shown), a push-button switch is used, the arrangement in this case being opposite as the switch is open when the lenses are covered, and closed when they are uncovered. The switch may, in either case, be actuated by slidable members connected to the shutters.
Patent GB-1271263-A (GB)
Title: Cross-linkable homo- and co-polymers
IPC: C08F20/60
Filed: 1969-05-30
Abstract: 1,271,263. Coating. FARBENFABRIKEN BAYER A.G. 30 May, 1969 [7 June, 1968], No. 27410/69. Heading B2E. [Also in Division C3] Materials such as leather, metals, wood, concrete, masonry, asbestos, and cement slabs are coated with a spontaneously cross-linking polymer of an acylamino methylene carbamate of the formula:  in which R is a haloalkyl or halocycloalkyl radical and R<SP>1</SP> is H or CH 3  and, optionally, one or more comonomers, e.g. unsaturated acids and esters, amides and nitriles thereof, vinyl ethers, vinyl esters, vinyl ketones, vinyl or vinylidene halides, aromatic vinyl compounds, heterocyclic vinyl compounds, conjugated dienes, olefines, and divinyl or divinylidene compounds. Coatings are suitably obtained using latexes of the polymers, and in one Example the polymers are used as binders for casein-based surface lacquers for dressing leather.
Patent GB-1147448-A (GB)
Title: Improvements in holders for cartridge fuses
IPC: H01H85/56
Filed: 1965-06-29
Abstract: 1,147,448. Cartridge-fuse holders. BILL SWITCHGEAR Ltd., and L. S. HUMPHRIES. 29 June, 1966 [29 June, 1965], No. 27426/65. Heading H2G. A cartridge-fuse holder comprises a moulded plastics body 10, e.g. of phenolic resin, having a fuse-accommodating cavity with a platform 13 at each end, the connecting tags 14 of a cartridge-fuse and corresponding contacts 17 being located by upstanding lugs 20 on the platforms and screwed to each platform 13 such that the distance between the inner edges of the contacts 17 is less than the length of the cavity. A channel around the inside of the body 10 receives a co-operating shroud of a fuse box into which the holder is plugged.
Patent GB-401859-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J19/42
Filed: 1932-10-03
Abstract: 401,859. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Oct. 3, 1932, No. 27461. Convention date, Oct. 3, 1931. [Class 39 (i).] In valves in which the electrodes are spaced apart by means independent of the pinch, a rectangular insulating frame A, Fig. 1, has holes or slots 1-3 in two opposite ends. An indirectly heated cathode is carried in the holes 3, two support rods of a grid are carried in the slots and holes 2, and two support rods for an anode in two dished halves are carried in the holes 1. The anode rods may be secured in the holes in one end of the frame A by rivets, screws or small plates welded on and may slide through the other end of the frame on heat expansion. The cathode and grid rods may be held in the holes 3, 2 by springs, or the flattened helical grid 8, Fig. 4, may press the two grid rods 9 against the sides of the holes. The electrodes are assembled on the frame before assembly on the pinch. Alternatively, the grid is in two halves and one half of the grid and also of the anode is inserted into the frame after the frame is mounted on the pinch, the cathode and finally the other halves of the grid and anode being then assembled. In a modification, Fig. 5, the slotted or apertured ends 10, 11 of the frame are of ceramic insulation and the sides of the frame are formed by the anode rods 12 encased in metal tubes 13. The rods 12 tie the ends 10, 11 together and extend downwardly to support the frame from the pinch. The frame may be supported in, or slightly inclined to, the longitudinal direction of the pinch or may be perpendicular thereto. The Specification as open to inspection under Sect. 91 comprises also modifications in which the lower part of the frame is replaced by the pinch having sealed-in eyes or tubes to receive the cathode and support rods and in which a zig-zag filamentary cathode is supported horizontally by wires directly from the pinch whilst the grid and anode have supports engaging slots or holes in side insulators joined by two horizontal insulating bars. A screen grid and a grid for collecting secondary electrons may be positioned by further slots in the insulators. The frame may be shaped to avoid conduction between electrodes due to metal deposits formed during manufacture of the cathode by the barium vapour process. This subject-matter does not appear in the Specification as accepted.
Patent GB-991952-A (GB)
Title: Method of making multi-layer wire coils for electrical equipment and wire coils madethereby
IPC: H01F41/12
Filed: 1963-07-11
Abstract: 991,952. Electric meter coils. LANDIS & GYR A. G. July 11, 1963 [Aug. 24, 1962], No. 27565/63. Heading G1Q. [Also in Division H1] A coil for an electricity meter is formed of layers of-wire 12, 14, 15 (Fig. 4) separated by sheets 8 (Fig. 3) of inter-layer insulation of a material which is.not softened by heat or softens only at a high temperature a sheet of thermoplastic insulating material 9 or 10 being secured on one or both sides of each sheet 8 or inserted with it during manufacture of the coil and heated to make it soft so that the winding wire becomes embedded in it. The thermoplastic sheets are heated at the winding station during the manufacture of the coil by hot air heat radiation or high frequency effects or the wire is heated whilst winding or both. The former 11, the coil cover 17 and the flanges 19 may be formed of strips of sheets such as 8, 9 and 10 stuck together by heat. The sheets 8 may be of cellulose paper, glass fibre paper, asbestos paper, polyethylene glycol terepthalate or polybisphenol carbonate. The thermoplastic material of the sheets 9 or 10 may be polyethylene, polyisobutylene, polystyrene or polypropylene.
Patent GB-760374-A (GB)
Title: Improvements in or relating to thermoplastic styrene-type resinous polymer compositions
IPC: C08K5/132
Filed: 1954-09-24
Abstract: Thermoplastic polymers or copolymers of a styrene-type compound of the formula: <FORM:0760374/IV(a)/1> where R is a lower alkyl radical and R1 is hydrogen or a lower alkyl radical and n is 0 to 2, e.g. styrene, o-, m-, p-methyl and ethyl-styrenes, 2,4-dimethyl styrene, a -methyl styrene and styrene-acrylonitrile copolymers, are colour stabilized by a compound of the formula: <FORM:0760374/IV(a)/2> where R11 is an alkyl group having from 1 to 4 carbon atoms or an alkylene group having 2 to 4 carbon atoms, X is hydrogen, halogen, an alkyl group having from 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, and Y is hydrogen, halogen, a hydroxyl group, or an alkyl or alkoxy group having 1 to 4 carbon atoms.  In examples, 2-hydroxy-4-methoxy benzophenone is used to stabilize polystyrene, polymethylstyrene and a methylstyrene-acrylonitrile copolymer, and 2-hydroxy4-allyloxybenzophenone to stabilize methylstyrene and a methylstyrene-acrylonitrile copolymer.  The benzophenones may be incorporated into the polymer or added to the monomers before bulk or aqueous emulsion polymerization.
Patent GB-1168319-A (GB)
Title: Improvements in Castors
Inventor: ATKINS LAURENCE
IPC: B60B33/02
Filed: 1967-06-15
Abstract: 1,168,319. Castors. HOMA ENG. Ltd. 16 Sept., 1968 [15 June, 1967], No. 27654/67, Heading A4U. A pedal plate 8, rocked transversely of a castor wheel 2 on a threaded pivot pin 9, has a cam surface 14, which brakes the wheel, and a cam surface 16, which simultaneously prevents swivelling, when the projection 8a at the r.h.s. of Fig. 4 is depressed, and has a second cam surface 16 which prevents swivelling of the castor wheel when the other projection 8a is depressed. The cam surface 14 engages the wheel rim directly or through a leaf spring 15. The cam surfaces 16 act on a stud 17 to allow a spring-pressed plunger 18, normally held in a retracted position, to rise under the influence of a spring 19 to engage in either one of diametrically opposed apertures 20 in a fixed housing 5. Stops 22 and 23 limit rocking movement of the pedal plate and, retain the pedal plate in the "of" position respectively. Specification 1144157 is referred to.
Patent GB-930467-A (GB)
Title: Heat-curable copolymers and varnishes prepared therefrom
Inventor: SANDER HANS
IPC: C08F8/00
Filed: 1960-08-10
Abstract: A copolymer of (A) a monoamide of a C4-C6 olefinically unsaturated dicarboxylic acid, wherein the carbonamide group may be mono- or di-substituted on the N atom by an aliphatic, cycloaliphatic or aromatic radical; (B) one or more compounds containing a -CH=CH2 or <FORM:0930467/IV(a)/1> group; and (C) one or more alpha-beta olefinically unsaturated mono- or di-carboxylic acids, esters or anhydrides, wherein the mol. ratio of (A):(B+C) is between 0,05 and 1 : 1 and of (B):(C) is between 10 and 0,1 : 1, has the N atoms of the carboxylic acid amide groups substituted by alkoxymethyl groups.  The alkoxymethyl groups may be introduced before, during or after polymerization by means of formaldehyde and the appropriate monohydric alcohol.  It is also possible to introduce the monoamide groups themselves after polymerization by treating a copolymer derived from a dicarboxylic acid or anhydride with an appropriate amount of an amine.  (A) may be a monoamide of maleic or fumaric acid; (B) may be a vinyl ether, vinyl ester, e.g. the acetate, or a vinyl aromatic compound, e.g. styrene or alpha methyl styrene; (C) may be acrylic, maleic or fumaric acid, maleic anhydride, or methyl or ethyl acrylate.  In forming the alkoxymethyl groups the alcohol may be used in a 5 to 10 times excess and water of condensation continuously removed to yield a p  solution which can be used directly as a varnish.  The solutions may also be mixed with other varnish resins, e.g. phenol, urea, melamine, epoxy or alkyd varnish resins.  2 to 20 wt. per cent of epoxy resin is said to donate practically unlimited stability in caustic soda solution.  In examples:-(1) 20 parts N-butyl maleic or fumaric acid monoamide, 40 parts styrene and 40 parts ethyl acrylate are polymerized in butanol using benzoyl peroxide as catalyst and subsequently treated with formaldehyde; the resulting solution is used as a varnish alone or mixed with 10% of an epoxy resin based on dihydroxydiphenyldimethylmethane having an epoxy No. of 0,2; (2) the monomers used are 30 parts N-cyclo-hexyl-maleic acid monoamide, 30 parts ethyl acrylate and 40 parts styrene; (3) the monomers are 20 parts N-butyl-maleic acid monoamide, 40 parts styrene, 30 parts ethyl acrylate and 10 parts vinyl ethyl ether; (4) 40 parts styrene, 40 parts ethyl acrylate and 11,5 parts maleic anhydride are polymerized in toluene with benzoyl peroxide as catalyst, precipitated, amidated with 2 parts ammonia, and then treated with excess butanol and formaldehyde.  Specification 792,874 is referred to.
Patent GB-1078173-A (GB)
Title: Manufacture of polymer compositions
Inventor: PERRINS LYLE EUGENE
IPC: C08F2/44
Filed: 1965-06-30
Abstract: Polymeric compositions are obtained by polymerizing one or more ethylenically unsaturated monomers in an aqueous medium in the presence of a free-radical yielding polymerization catalyst, a dispersion of a solid additive in an aqueous solution of a water soluble salt of an aliphatic carboxylic acid containing 6 or more carbon atoms being added to the aqueous medium and pH of the aqueous medium being reduced to less than 7.0 before the polymeric material is separated from the aqueous medium.  The dispersion may be added to the aqueous medium before, during, or after the polymerization. Suitable additives include stabilizers, e.g. dibutyl tin S,S1-bis(nonylthioglycollate), tris(nonylphenyl)phosphite, lead stearate, tribasic lead sulphate, calcium stearate, and cadmium laurate, pigments, e.g. TiO2, cadmium sulphides and selenides, chromates, Prussian Blue, Brunswick Green, ultra-marines, and carbon blacks, organic pigments, e.g. copper phthalo-cyanine, quinacridones, diazo pigments, and vat pigments, e.g. indanthrone, flavanthrone, and perylene derivatives.  Suitable acid salts include the alkali metal and ammonium salts of capric, caprylic, caproic, lauric, stearic and oleic acids.  Monomers specified are:-vinyl chloride, vinylidene chloride, vinyl acetate, chloroprene, methyl-, ethyl-, and 2-ethyl hexyl-acrylates, methyl methacrylate, styrene, butadiene, acrylonitrile.  Both suspension and emulsion polymerization techniques may be used, various conventional catalysts, dispersing agents, and emulsifying agents being used. In the examples, vinyl chloride homopolymers (Exs. 1-21) and copolymers with vinyl acetate (Ex. 22) are prepared, of which the following are comparative examples:-(Ex. 1) no acid salt, (Ex. 4) sodium benzoate used, (Ex. 6) sodium valerate used, (Ex. 9) sodium rosinate used, (Ex. 10) cetyl pyridinium chloride used, (Ex. 11) sodium lauryl sulphate, sodium dodecyl benzene sulphonate, and the sodium salt of sulphonated methyl oleate used, (Exs. 13 and 17) pH greater than 7.0 employed, and (Ex. 20) calcium stearate used.
Patent GB-1270447-A (GB)
Title: Machine tool drive control units
IPC: H02K7/10
Filed: 1969-06-02
Abstract: 1,270,447. Spindle drives. H. J. PERCIVAL. 2 June, 1969, No. 27878/69. Heading B3B. [Also in Division H2] In a drive for a machine tool providing a slow rate of feed or rapid traverse, a pair of motors 20, 21, Fig. 1, at least one of which is associated with a brake 31 are coupled to the drive shaft 86 of for example a sliding saddle through epicyclic gearing 17. The feed motor 20 drives a central shaft 46 of gearing 17 through spur gearing 87, 88, shaft 46 carrying a sun-wheel 63, Fig. 2, which meshes with a single planet wheel 62 having two coaxial sets of teeth 60, 79 meshing respectively with internal teeth on a pair of ring gears 57, 76. External teeth 56 on the ring gear 57 mesh with a pinion 42 on the drive shaft of the traverse motor 21 whilst ring gear 76 has a hub 81 splined to the output shaft 86. In operation, drive may take place either from feed motor 20 through shaft 46 and sun-wheel 63 with the ring gear 57 held stationary by brake 31 to give a low-speed output or from traverse motor 21 with the shaft 46 stationary and ring gears 57, 76 locked together by the planet wheel 62 to give a high-speed output. Alternatively both motors may be operative to give a variable traverse rate. In a modification, Figs. 3A, 3B (not shown), the feed motor (97) is also used to drive a machine tool as well as operate the sliding saddle carrying it. Both feed and traverse motors (97, 98) are fitted with brakes (99, 100) and the drive from the feed motor is divided by a power distribution shaft (135), (a) through spur gears (166, 167, 175, 176) to a first output shaft (160) on which a tool-carrying quill shaft (107) is splined; and (b) through spur gears (144, 146, 147, 152) to the input shaft (46<SP>1</SP>) of an epicyclic unit (17<SP>1</SP>) similar to the unit 17 in Fig. 1 and having a second output shaft (85<SP>1</SP>) which operates a saddle carrying the quill shaft. As in Fig. 1, the output shaft of the traverse motor is coupled to the first ring gear of the epicyclic unit.
Patent GB-982300-A (GB)
Title: Improved heat exchange apparatus
Inventor: WALSOM DEREK JOHN
IPC: F28D9/04
Filed: 1961-08-03
Abstract: 982,300. Plate-type heat exchangers. FREEMAN TAYLOR MACHINES Ltd. Nov. 1, 1962 [Aug. 3, 1961], No. 28166/61. Heading F4S. A heat-exchanger comprises an outer cylindrical casing A having an inner coaxially disposed cylinder B extending through it, and in the annular space 1 so formed are arranged two helical elements H 1 , H 2 , having their successive convolutions interleaved to provide two separate helical flow paths for the respective heatexchange media, the said helical elements having their outer and inner edges in sealing relation with the inner and outer walls of the outer casing and inner cylinder respectively. As shown, helical elements H 1 , H 2  are threaded together and then subjected to axial compression until adjacent flanges 2C meet. The helical elements are made up of circular plates 2, e.g. of 16 s.w.g. material having a central aperture. The plates are cut along a straight radial line extending from said aperture to the outer periphery of the plates, the split portions of said plates being displaced axially, and a cut radial edge of each plate is welded to an opposite radial edge of an adjacent plate so as to produce a helix. Each plate is formed with radially extending convex and concave tapered indentations 23, 24 to impart turbulence to the heat-exchange media flowing through the helical paths F 1 , F 2 . The inner edges 2a of the helical elements are in sealing contact with the outer sleeve 8, e.g. of silicon rubber, of the inner cylinder B. The sleeve 8 is mounted on a thin metal tube 7 which has its opposite ends closed by plates 9, 10. When the elements are in position on the inner cylinder B the tube 7 is subjected to internal hydraulic pressure through holes 12, 13 in end-plate 10, which causes permanent deformation of the tube and effects a permanent seal between sleeve 8 and the edges 2a of the helical elements. In a modification the inner cylinder may consist solely of a suitable moulded rubber tube which is filled permanently with water and compressed axially to force the wall of the tube outwards against edges 2a. The assembled elements H 1 , H 2  are encased in a sleeve 14 of resilient material, e.g. silicon rubber, which has a sheet-metal wrapper 15 around it. The wrapper is capable of being tightened by means of axially extending rods 16 (Figs. 2 and 5, not shown) which are connected with the opposite edges of the wrapper 15 and are drawn together by means of studs. Two sectoral shaped headers 5 are provided at each end of the head exchanger (Fig. 6, not shown).
Patent GB-1589521-A (GB)
Title: Fluid operated telescoping device eg for use as an elevating device for a gun barrel
IPC: F41A27/30
Filed: 1977-07-05
Abstract: The gun has a gun barrel, which is not balanced, and a cylinder/piston unit for height adjustment and damping of the gun barrel. This unit has two parts (24, 36) which can move in one another in a telescopic manner. The one part (24) is connected to the frame and the other part (36) to the gun barrel. A stationary piston (33) is attached to one of the two parts (24 or 36). A moving piston (34), together with an end surface of the stationary piston, bounds a cylindrical space (U2) which holds a flow medium under pressure in order to adjust the unit in length and, by means of the stationary piston (33), to produce damping of an abrupt lengthening of the unit. The stationary piston (33) has at least one hole with a narrowed outlet (35a) and/or has an overpressure valve (35b) in order to connect the two ends of this piston to one another, so that an abrupt lengthening of the unit is damped by limiting the piston movement by means of the flow medium which is located in the cylindrical space (U2). <IMAGE>
Patent GB-947929-A (GB)
Title: A thermal responsive or moisture-sensitive electrical controlling or measuring device
IPC: G01N27/04
Filed: 1960-08-15
Abstract: 947,929. Transistor relay circuits. M. CLAUSEN, [trading as DANFOSS VED INGENIR MADS CLAUSEN]. Aug. 15, 1960 [Aug. 14, 1959], No. 28205/60. Heading H3T. [Also in Divisions G1 and G4] A resistor 2 (Fig. 1) whose conductivity is determined by the ambient temperature or humidity, is fed with A.C. by transformer winding 3 through a bridge rectifier 5 to give a pulsating D.C. voltage E2, which, in opposition to a preadjusted voltage E1 obtained from the same A.C. source through another bridge rectifier 15, biases a first transistor 10 connected in cascade with a second transistor 11 having a meter, or as shown a relay 13 in its collector circuit. When the conductivity of resistor 2 is raised, the voltage E2 increases to reduce the bias on transistor 10 and decrease its collector current. This also increases the bias on transistor 11, and its collector current increases, and is shown on a meter, or operates relay 13 at a predetermined level. In a modification for increasing the sensitivity of the device, the impedance of the D.C. source is made high, whereby when current flows through the meter or relay 13, the D.C. voltage across potentiometer 21 is reduced, and the output current is further increased.
Patent GB-429811-A (GB)
Title: Improvements in bath room units
IPC: A47B67/00
Filed: 1934-10-03
Abstract: 429,811. Conduits; lavatory basins. ACCESSORIES CO., Inc., 40, West 40th Street, New York, U.S.A.-(Assignees of Sakier, G.; 40, West 40th Street, New York, U.S.A.) Oct. 3, 1934, No. 28274. Convention date, Oct. 3, 1933. [Classes 26 and 33] A unit for securement to the wall of a bath room comprises a casing or panel 16, Fig. 1, having vertical hollow marginal pilasters 17 to receive and enclose water supply, soil and vent pipes, and a vertical intermediate web or wall portion 18, Fig. 3, uniting said pilasters and forming a vertical recess between them. The pilasters have inward flanges 20a abutting the wall and the casing is secured upon bars 15 carried by strips 15a fastened to the wall. The web portion ends in a flange which supports a basin 24 and is provided with hollow transverse members 36, 37 between which are supported a medicine-cabinet 43 carrying a mirror 44, and lamps 42. Above the member 36 is a compartment closed by doors 38 and housing a waterwaste-preventer serving an adjacent closet. A member 32 telescopes within the upper part of the structure, and a removable panel 28 is provided in the lower part thereof.